Lead anchor-setting tool

ABSTRACT

A setting tool suitable for installing lead anchors in walls having the following elements: a main body having a tapered conical nose at one end and a central bore having an enlarged diameter section at the end opposite the nose. An annular groove is cut in the surface of the main body concentric to the central bore, and a small bore extends from the bed of the groove to the central bore on an axis transverse to the axis of the central bore. A drive bolt is seated in the central bore of the main body, and comprises a cylindrical head having an internal recess adapted to receive a turning wrench, a section of reduced diameter attached to and on the same axis with the head having an annular groove in it which is aligned with the annular groove on the surface of the body, and a threaded section attached to the section of reduced diameter and having the same axis. A pin is seated in the small bore in the main body, one end of which extends into the annular groove in the section of reduced diameter of the drive bolt, thus retaining the bolt against axial movement. A retaining split ring, mounted in the groove of the body, holds the pin in place.

United States Patent [72] Inventor Harry P. Buberniak PrimaryExaminerAndrew R. Juhasz 12372 Devoe Ave., Southgate, Mich. AssistantExaminer-Leon Gilden 48192 AttorneySettle, Batchelder and Oltman [21]Appl. No. 837,268

[22] Filed June 27, 1969 45 patented An 24, 1971 ABSTRACT: A settingtool suitable for installing lead anchors in walls having the followingelements: a main body having a tapered conical nose at one end and acentral bore having an 54] LEAD ANcnomsE-n-mc TOOL enlarged diametersection at the end opposite the nose. An an- 3 Chin, 3 Drawing m nulargroove 15 cut in the surface of the mam body concentric to the centralbore, and a small bore extends from the bed of the groove to the centralbore on an axis transvem to the axis 29/234 of the central bore. A drivebolt is seated in the central bore of 1 CL a 19/04 the main body, andcomprises a cylindrical head having an in- [50] Field of Search 29/264,tema] recess d d to receive a turning wrench, a section of 234, 272reduced diameter attached to and on the same axis with the head havingan annular groove in it which is aligned with the [56] CM annular grooveon the surface of the body, and a threaded sec- UNITED STATES PATENTStion attached to the section of reduced diameter and having 2,487,33111/1949 Greene 29/264 the same axis. A pin is seated in the small borein the main 2,562,419 7/1951 Ferris 29/264 X body, one end of whichextends into the annular groove in the 3,166,210 1/1965 Nelson 29/264Xsection of reduced diameter of the drive bolt, thus retaining 3,462,9888/1969 Tuda et al.. 29/264 X the bolt against axial movement. Aretaining split ring,

3,472,052 10/1969 Chance 29/264 X mounted in the groove of the body,holds the pin in place.

1 i 54 l -s -'-I8 46 "i PATENTEU AUG24 1971 3,600,789

' IN VENTOR.

HARRY P BUBEQN/AK.

BY SETTLE, BATCHELDER a OLTMAN.

/ ATT'YS.

LEAD ANCHOR-SE'I'IIN G TOOL BACKGROUND OF THE INVENTION 1. Field of theInvention This invention relates to a setting tool for lead or otherexpandable metallic anchors. Lead anchors are conventionally used toprovide supporting means in a wall for bolts, hooks, and the like, whereaccess cannot be gained to the interior of the wall to mount aconventional nut and bolt type anchor.

2. The Prior Art A lead anchor is mounted by placing it in a closefitting orifice in a wall, then expanding the anchor against the wallsof the orifice to achieve a tight, secure fit. In the past, when leadanchors were installed in walls, the anchors would sometimes fall in thestud spaces behind the walls because there has been no good way to holdthe anchors securely while installing them in the walls. Once an anchorfell into the stud space there was no economical way to get it out. Theonly way to get it out was to cut a hole in the bottom of the wall. Thecost of repairing the hole was more than the cost of the lead anchor.

It is an object of this invention to provide a setting tool forinserting lead anchors in walls.

It is a further object of this invention to provide a setting tool forinserting lead anchors in walls which enables an anchor to be heldsecurely while it is being put in place.

Other objects of this invention will appear in the following descriptionand appended claims, reference being had to the accompanying drawingsforming a part of this specification wherein like reference charactersdesignate corresponding parts in the several views, in which:

FIG. 1 is an exploded perspective view of the tool of the invention;

FIG. 2 is a side elevational view of the tool of the invention, showingit in operative position; and

FIG. 3 is a front elevational view of the tool of the invention, showingthe operative wrenches in position.

DESCRIPTION OF THE PREFERRED EMBODIMENT The body also has an annulargroove around the end adjacent the nose l4 and a small bore 22 extendingfrom the bed of the groove 20 to the central bore 16, having an axistransverse to the axis of the central bore 16.

A drive bolt 24 having a threaded end 26, an enlarged diameter section28 having an annular groove 30 in it, and a still further enlargeddiameter head 32 with a hexagonal shaped'internal recess 34 forreceiving a wrench head, is seated in the central bore 16 of the body12. The groove 30 in the enlarged diameter section 28 is positioned sothat when the drive bolt 24 is in place within the body 12, it is inconcentric radial alignment with the groove 20in the body 12. When thedrive bolt 24 is seated within the main body 12, a pin 36 is inserted inthe small bore 22, engaging the groove 30 in the enlarged diametersection '28. A retaining split ring 38 is then seated in the groove 20,holding the pin 36 in place, thus retaining the bolt 24 against axialmovement.

In use, an anchor 40 (not a part of the invention) compris' ing atubular outer member 42 and a conically shaped inner member 44 having athreaded central bore 46, is threaded onto the threaded end 26 of thebolt 24 seated in the body 12. The base of the conical shaped innermember 44 is greater in diameter than the interior diameter of the outermember 42. The anchor 40 is then placed in position in an orifice 48 ina wall 50. A wrench 52 is then placed around the main body 12 and anAllen wrench 54 is inserted in the recess 34 of the bolt 24. The splitring 38 serves as a support for the wrench 52. The bolt 24 is thenrotated while the body 12 is held steady. Rotating the bolt 24 draws theinner member 44 of the lead anchor 40 toward the tool 10 while theconical nose 14 of the body 12 is drawn toward the outer member 42.Drawing the inner member 44 of the anchor 40 toward the bolt 24, causesthe outer member 42 to expand at both ends, seating the anchor 40tightly within the wall 50. The expansion at the rearward end of theanchor 40 is due to the pressure of the inner member 44 on the outermember 42 while the expansion at the forward end is due to the pressureof the conical nose 12.

It should be appreciated that m size of the tool 10 as well as the sizeof the bolt 24 can be varied to enable practically any size lead anchorto be installed. The dimensions of the parts need only be such that thebolt 24 can be seated in the main body 10, and that the threaded end 26of the bolt fit the inner member 44 of the anchor 40.

Iclaim:

l. A setting tool suitable for installing lead anchors in wallscomprising an elongate main body having a conical nose portion at oneend, means defining a central bore extending longitudinally through saidbody, and opening centrally of said nose portion, a drive bolt mountedfor free rotation within said bore, means maintaining said drive boltagainst axial displacement in said bore, said bolt having a threadedportion projecting from said bore, beyond said nose portion andcoaxially aligned therewith, and adapted to be threadably received bythe inner member of the anchor and the distal end of said conical noseportion adapted to be received within the adjacent opening of the outermember of the anchor, whereby rotation of said drive bolt, while saidmain body is held steady, draws the inner member of the anchor towardthe tool, concurrently thereby expanding the outer member of the anchoragainst an orifice in a wall, thus securing the anchor in the wall.

2. A setting tool suitable for installing lead anchors in walls,comprising an elongate main body having a tapered conical nose portionat one end, means defining a central bore extending longitudinally insaid main body having an enlarged diameter section at the end oppositesaid nose portion, means defining a small bore extending transverselythrough said body to said central bore, a drive bolt seated in saidcentral bore for free rotation having a threaded cylindrical bodysection'extended beyond said nose portion, an enlarged cylindrical necksection having an annulargroove therein attached to one end of said bodysection, a still further enlarged cylindrical head attached to said necksection, said head being adapted to receive a turning means, the bodysection, neck section and head all being on the same axis, a pin seatedin said small bore, an end of which extends into said annular groove insaid section of reduced diameter, thereby retaining said bolt againstaxial movement, and means for holding said pin in place, said threadedsection of said drive bolt adapted to be received within the innermember of an anchor and said conical nose portion adapted to be receivedwithin the outer member of the anchor, whereby rotation of said drivebolt draws the inner member of the anchor toward the tool and expandsthe outer member.

3. A setting tool suitable for installing lead anchors in walls,comprising an elongate hexagonal shaped main body having a taperedconical nose at one end, means defining a central bore extendinglongitudinally in said main body having an enlarged diameter section atthe end opposite said nose, an annular groove on the surface of saidbody concentric to said central bore, means defining a small boreextending transversely through said body from said groove to saidcentral bore, a drive bolt seated in said central bore for freerotation, having a threaded cylindrical body section, an enlargedcylindrical neck section having anannular groove therein attached to oneend of said body section, a still further enlarged cylindrical headattached to said neck section, said head having a recess in the topthereof adapted to receive a turning means, the body section, necksection and head all being on the same axis, a pin seated in said smallbore, an end of which extends into said annular groove in said sectionof reduced diameter, thereby retaining said bolt against axial movement,and a retaining ring, mounted in said groove of said body, holding saidpin in place, said threaded cylindrical body section projecting fromsaid central bore beyond said nose and adapted to be threadably receivedby the inner member of the anchor and the tapered conical nose adaptedto be received within the ad- 5 walljacent end of the outer member ofthe anchor, whereby rota-

1. A setting tool suitable for installing lead anchors in wallscomprising an elongate main body having a conical nose portion at oneend, means defining a central bore extending longitudinally through saidbody, and opening centrally of said nose portion, a drive bolt mountedfor free rotation within said bore, means maintaining said drive boltagainst axial displacement in said bore, said bolt having a threadedportion projecting from said bore, beyond said nose portion andcoaxially aligned therewith, and adapted to be threadably received bythe inner member of the anchor and the distal end of said conical noseportion adapted to be received within the adjacent opening of the outermember of the anchor, whereby rotation of said drive bolt, while saidmain body is held steady, draws the inner member of the anchor towardthe tool, concurrently thereby expanding the outer member of the anchoragainst an orifice in a wall, thus securing the anchor in the wall.
 2. Asetting tool suitable for installing lead anchors in walls, comprisingan elongate main body having a tapered conical nose portion at one end,means defining a central bore extending longitudinally in said main bodyhaving an enlarged diameter section at the end opposite said noseportion, means defining a small bore extending transversely through saidbody to said central bore, a drive bolt seated in said central bore forfree rotation having a threaded cylindrical body section extended beyondsaid nose portion, an enlarged cylindricAl neck section having anannular groove therein attached to one end of said body section, a stillfurther enlarged cylindrical head attached to said neck section, saidhead being adapted to receive a turning means, the body section, necksection and head all being on the same axis, a pin seated in said smallbore, an end of which extends into said annular groove in said sectionof reduced diameter, thereby retaining said bolt against axial movement,and means for holding said pin in place, said threaded section of saiddrive bolt adapted to be received within the inner member of an anchorand said conical nose portion adapted to be received within the outermember of the anchor, whereby rotation of said drive bolt draws theinner member of the anchor toward the tool and expands the outer member.3. A setting tool suitable for installing lead anchors in walls,comprising an elongate hexagonal shaped main body having a taperedconical nose at one end, means defining a central bore extendinglongitudinally in said main body having an enlarged diameter section atthe end opposite said nose, an annular groove on the surface of saidbody concentric to said central bore, means defining a small boreextending transversely through said body from said groove to saidcentral bore, a drive bolt seated in said central bore for freerotation, having a threaded cylindrical body section, an enlargedcylindrical neck section having an annular groove therein attached toone end of said body section, a still further enlarged cylindrical headattached to said neck section, said head having a recess in the topthereof adapted to receive a turning means, the body section, necksection and head all being on the same axis, a pin seated in said smallbore, an end of which extends into said annular groove in said sectionof reduced diameter, thereby retaining said bolt against axial movement,and a retaining ring, mounted in said groove of said body, holding saidpin in place, said threaded cylindrical body section projecting fromsaid central bore beyond said nose and adapted to be threadably receivedby the inner member of the anchor and the tapered conical nose adaptedto be received within the adjacent end of the outer member of theanchor, whereby rotation of said drive bolt while said main body is heldsteady draws the inner member of the anchor toward the tool,concurrently thereby expanding the outer member of the anchor against anorifice in a wall, thus securing the anchor in the wall.